Water Restored for Nearly All 300,000 Affected by West Virginia Ban

CHARLESTON, W.Va.—Water was restored here Friday for nearly all 300,000 people affected by a chemical spill that contaminated the supply for more than a week, officials said as new details emerged about the company at the center of the incident.

The lifting of the wide water ban marked a turning point in a crisis that began Jan. 9 after authorities said a substance called Crude MCHM had leaked from a storage tank, breached a faulty...